Emulsifying apparatus



Jun w, 1923. j 1,461,653

. G. GRINDROD EMUL'SIFYING APPARATUS Filed 001;. 15. 1921 s Sheets-Sheet 1 I ATTORNEY July 10, 11923.

e. GRINDROD EMULS IFYING APPARATUS Filed Oct. 15, 1921 s Sheets-Sheet 2 July 10, 1923.

G. GRINDROD EMULS I FYING APPARATUS s Shets-Sheet 5 Filed Oct. 15 1921 ATTORNEY form of apparatus for this pur Patented duly- 1Q, 11%.

iarrev 'ns'rrrme arrears.

' enon-enmnnon, or oeonomowoe, Wisconsin, .assren'on "ro carron .-:1"

-. @rlginal application filed August 12, 191 9,Serial Ito. 316,966. Divided and this application filed October a 15,1921. Serial No. 508,014.

ToaZZwhomitmayo omem:

. Be it known that I, Gnome GRINoBoD, a -;citizen of the United States, and a resident of 'Oconomowoc, in the county of .Wauke- 5 sha and State of Wisconsin, have invented certain new and useful Improvements in Emulsifying Apparatus, of which the following is a specification.

. This invention relates to an improved 1 emulsifying apparatus for the purpose of thoroughly emulsifying liquids and more particu arly, 'a fatty liquid with milk con- 'stituents. The subject matter of the present ap lication constitutes a division of my 1 prior application for patent filed August 12th, 1919, Serial No. 316,966, wherein l have fully described and claimed the proc ess of emulsification-as carried out by means a of the present apparatus. a It is the rim'ry object of this invention to provide an emulsifying apparatus wherein steam may be effectively utilized for the purpose of dividing the fat into minute lobules. I

It is a so an important feature of the invention to provide means for forcibly in jecting the subdivided fat directly into the body of the emulsifying liquid whereby the coagulation of albumen upon the fat globules in the mass of emulsifying liquid will be carried on by the process of accretion.

The present invention further comprehends the provision of a relatively simple se which, in a thoroughly practical and e ective manner, will accom lish the thorough emulsification of the atty liquids with the milk constituents so as to preclude their possible subsequent separation.

With the foregoing and other objects-in view, the invention consists in the improved process and apparatus as above characterized and which will be hereinafter more fully described, illustrated in the accompanying drawings, and subsequently incorporated in the subjoined claims.

In the drawings wherein similar reference characters designate corresponding parts throughout the several views,

Fig. 1 is a sectional view through a forewarmer, illustratinga ve simple. form of apparatus by ineans of w ich the emulsification tics-d;

I v i Fig. 2 is a die aminatic view illustrating process may be successfully prac-- another form 0 apparatus which may be em loyed;

ig. 3 is a vertical sectional view of the emulsifying means used in connection with the apparatus shown in Fig. 2;

Fig. 4 is a bottom plan view;

Fig. 5 is a sectional view of one steel nozzles; v

Fig. 6 is an end elevation of the nozzle;

Fig. 7 is an elevation illustrating another way in which the fat and milk may be supplied to the emulsifying means;

Fig. 8 isa diagrammatic view showing a modified form of a paratus in which the device illustrated in Fig. 7 is employed;

Figure 9 is 'a plan view of the emulsifying device shown in Fig. 7;

Figure 10 is aside elevation thereof;

Figure 11 is a vertical sectional view;

I Figure 12 is an elevation of a part of the emulsifyin device which is provided with the fluid lm receiving chamber and the steam jet orifices;

Figure 13 is a top plan view of the part shown in Fig. 12;

. Figure 14 is a bottom plan view thereof;

Figure 15 is a diagrammatic view illustrating still another form of'apparatus;

Figure 16 is a vertical sectional view of the through the emulsifying means employed in connection with the apparatus shown 1111 Fig. 15,

- igure 17.. is a bottom plan view thereof; and

' Figure 18 is a detail sectional view of one pair of the associated steam nozzles shown in Fig. 16.

It is the purpose of the present invention PRODUCTS COMPANY, OF OCONOMOWOC, WISCONSIN, A CORPORATION OF nmto provide an apparatus whereby the liquid fat, preferably cocoanut fat, is broken up into minute globules and these globules enveloped by a colloid of coagulated albumen in a, state of maximum hydration, and to thereby obtain a very thorough emuls-ifica-' tion of the fatty fluid with the milk constituents.

In Fig. 1 of the drawings, l have disclosed an apparatus of the simplest. embodiment for accomplishing the desirable result above referred to. In this'figure, 5 designates the fore-warmer which is a receptacle of any desired form and capacity and is .adapted to receive skim milk, indicated at 6.

Throughthe pipe 7 li uidi'at, (such ascocoanut fat) is supplie to the skim milk in the fore-warmer from a suitable tank or reservoir, the outlet end 8 of said pipe being disposed a considerable dlstance below the surface of the'skim milk6. From a suitable source'of supply, live steam is ejected into the downwardly extending outlet end of the pipe 7 through pipe 9; the point of emission 10 of the live steam being suitably spaced from the outlet. end 8 of the pipe 7.

:In the operation of the apparatus, the live steam in impinging upon the liquid fat breaks up oratomizes the fat and subdivides' the same into minute globules.

lit will be understood that these fat globules practically become incorporated in the steam. Thus as the steam and fat issue from the outlet end Set the pipe into the surrounding body of relatively cool skim milk, the

steam will condense and in condensing the globules of steam will collapse with explosivefforce. The explosive force of the bursting steam globules upon the enclosed fat exerts a further disrupting-action upon the.

latter sothat the fat globules are further subdivided, and form nuclei upon which, a process of accretion the coagulating albumen of the surroundingskim milk is de- 80 posited and forms an enveloping colloidal film. This process continues and by. the further building. up of molecular aggregates of the coagulating albumen upon the fat nuclei, a thorough emulsification of the fatty constituents with the milk constituents is efiected.

- piple' 13.

he fat containing tank or reservoir 11 is air-tight and is equifi gauge. This tank is ed almost to the top with liquid fat, the fat chamber being first .evacuated so as to expel the air therefrom to thereby prevent the formation of fatty acids which might or tug in the resence of air and moisture. After the ta has been filled with the liquid fat an inert gas is admitted. to the chamber to destroy the vacuum and force the liquid through the pipe 10 to the injector 12.

In this form of the apparatus I employ an emulsifier shown in detail in Fig. 3. As

, therein illustrated this-emulsifier consists of a top section 14 and asimilar intermediate section 15 disposed in reverse relation to the section 14. tween' 'these two sections of the emulsifier a nozzle-carrying plate 16 is interposed and in conjunction with said sections forms the chambers 17 and 18 respectively. 19 designates the boted with a suitable *broken fineness tomor base section of the emuls fier which in conjunction with the section 15 forms a third chamber 20. The several sections 14,.

15 and 19, and the plate 16. are securely held in assembled relation by means of a plurality of vertical tie-bolts 21.

Y The lower end of the steam supply pipe 13 which extends downwardlyyinto the mass of emulsifying liquid contained in the forewarmer 22 is connected to the inlet port 23,

' of the section 14 of the emulsifier whereby the fat and steam are admitted to the chamber 17 as will be hereinafter explained' A series of injector nozzles 24 are threaded in the plate 16 and extend upwardly therefrom. The lower tapered ends 25 of these a nozzles extend into the upper ends of OPBIP.

ings 26 provided in the section 15. The an-' i I nular wall of this section is further pro vided with a series of openings27-through which milk is. admitted from the forewarmer into the chamber 18.

In this form of the apparatus the bottom wall of the section 19 of the emulsifier is provided with a plurality of relatively small openings 28.

In the operation of the apparatus just de-- scribed, when the steam is turned on, the injector 12 through which the steam passes under high pressuredraws the fat -from the atomized condition. The-[atomized fat and the steam is discharged into the chamber 17 of the emulsifier and pass through the several nozzles 24. The steam and: at issue from the nozzles 24 into the openings 26 and as they enter these openings 'thefilm of milk in the chamber 18 upon the surface of the bottomwall of the section 15 is also drawn into these openings and broken up so that it becomes intermixed with the fat lobules,

and issues from said openings toget er with the fat and steam in the form of a plurality of jet sprays into "the chamber 2.0.] As the milk constituents enter the openings 26 and are broken u or atomized they are subjected to the high eat of the steam andraise'd to or above a boiling temperature so that the albumen of the milk isv coagulated and hav ing an aflinity for the fat globules tends to collect thereon in the form of a thin colloidal I film, and thereb prevents coalescing of the. Y fat globules wit each other. It is due to the condition thus' produced that theeperma nency of the subsequently formed emulsion is assured. The steam, carrying the fat' and milkconstituents, is delivered with considerable im act across the chamber 20 and against t e wall of-the section 19 of the emultank or reservoir-11 and reduces the fat to an igeemaa j into the suri ounding-mass'df relatively cool skim milk contained in the fore-warmer.

Here, condensation of the steam takes place. I have found in practice that the impactive force exerted by the condensing steam globules u on thefat serves to disrupt the latter and subdivide the same intoglobules of mi-. nute size. This-action occurs at two difl'erent points. First, upon the entrance of milk into the openings 26 andthe ejector chamber 20, the Water inthe milkcauses a partial condensation of the steam. The explosive violence of the condensing steam tends to break upsuch fat as may have escaped atomizat io n, which breaking up action is furthered by the impact o f the fat and milk constituentsf against the perforated wall of the emulsifier section19. Secondly, after the constituents are ejected by the steam through the openings 28 into the cool mass of skim milk, the final condensation of the remaining steam-occurs, and as the steam globules 001- flapse the fat which is incorporated therein receives the full impactive eilect so that" any fat which has escaped complete subdivision at the previous stages of the process will be fina'll' broken at this point-thereby provid 'ing a ditional nuclei upon which the albumen coa' ulations of the surrounding milk are de- ;positedl Thus coalescence of the subdivided fat in its final emulsification with the milk is renderedim ossible.

V In Fi s.- to 14 inclusive, 1 have illustrated another formof apparatus for practicing my improved process which, for practical reasons. of simpl city n construction and eepnomic manufacture, I deem preferahle. this construction, the fat is notadmitted'tothe steam supply pipe anddelivered to the emulsifier separately from the milk but'the milk and fat are. delivered to- .gether in desirable predetermined propor- -tidns to the emulsifier and aresimultaneously ,acted up'on b'y a'plurality'of steam jets. To

this end I provide an emulsifier of the construction illustrated in Fig. 11, which consists-ofa top section29, an intermediate secltion30 and abase section3 l, the several sectionszbeing assembled and secured together by means of tie-bolts orother suitable fastening elements. The top section 29 isprovided in its bottom face with a chamber 32 into which the live steam is delivered through" thepipe 33. The intermediate section 30of the emulsifier is formed with a very narrow chamber 34 to 'receivea thin film of skim milk. and fat. A plurality of jet orifices 35 l u I a afl'ord communicat on between this chamber .and the-steam receivingchamber 32. The

section 30 of the emulsifier is further provided with a plurality of expansion chamhers- 36 in line with the jetorifices 35'but of i ipp'recialily 'larger diameter than said orices.

These e xpansionchambers-36 open at' "theirlower e'ndsinto the'ejectorchamber 37.

of the section31 of the emulsifier; Th'ea'nnular walliof this chamber isprovidecl with a plurality of tra'nsverse' openings 38 through which the liquidsare ejected radially into the surrounding body of skim milk in the fore-warmer.

The fat-supply pipe 39 leading from the tank or' reservoir 40 extends downwardly,

into the fore-warmer belowthe emulsifier and thenupwardly through a central opening in the section 31 and-is centrally-connected to a threaded socket or opening 41 provided in the section'30 of the emulsifier,

and which communicates with the chamber '45 loosely surrounding the pipe andywith a suitable handle 46 whereby the valve sleeve 43 may be raised or lowered to expose or close a desired portion of the slot 421 For the purpose of ascertaining in an accurate manner the amount of skim milk which is permitted to enter through said slot into the pipe 39, a suitably graduated sealemay beprovided on the pipe 39 with respect to which the, handle 46 is adapted to be .posi- 'tioned.

In the operationof this form of apparatus, the steam is delivered through thejpipe 33- into the chamber 32 and passes "through "the orifices 35 at a velocityof approximately 1400 feet perminu'te. --A. vacuuinfis thus formed in the space or chamber 34, and fat andskim milk are drawn through thepipe 39 upwardly into said space. "The two liquids are'not however intimately mixed before entering this chamber and it is immaterial whether they enter through the same tube as'in this embodiment ofthe ap:

paratus or through differenttubes or pa s sages so long as suitable quantities of each fluid are drawn into the chamber. However, for simplicity of construction the liquids are preferably drawn through the same tube.

The liquids are distributed in the chamher or space 34 inthe form of a thin film so that they are acted'upon by the steam jets passing through said chamber. As these jets at high velocity enter the expansion chambers 36, they tearor break away suc cessive portions of the liquid film as it is constantly renewed. and atomize such portions. As previously stated the milk-"particles are raised .to a boiling tern 'erature ring thi atomizin process so t at thg-lao steam, resulting in the thorough and permanen't emulsification of the fluid constituents.

In Figs. to 18, inclusive, 1 have illustrated still another alternative form of the apparatus which is quite similar to that illustrated in Fig. 3. As shown in Fig. 16, however, in this instance the emulsifier is provided with an additional section 47, affording a second injector chamber 48. The section'47 is interposed between the section 15 and the section 19' of the emulsifier.

This form of the apparatus also differs from those previously described in that the steam,

fat and :milk are respectively delivered to I separate chambers of the emulsifier. Thus,

as shown in 'Fig. 15, the steam supply 'plpe 49 delivers steam to the top chamber 17' of the emulsifier while the pipe 50 extending downwardly, through the milk in the forewarmer is extended upwardly through 0 enings 49' and 50', respectively, in the ase section 19. and section 47 of the emulsifier and is connected to the bottom wall of the; section 15' to supply the liquid fat to thechamber 18'. The milk enters from the fore- Lwarmer through openings 51 in the annular wall of the section 47 and collects in the chamber 48.

A series of injector nozzles 24 are mounted in the plate 16 asin the apparatus shown in Fig. 3, and in the bottom wall of section 15 a similar series of nozzles 52 are mounted. The latter nozzles are disposed in axial alignment with the corresponding nozzles 24 but are of somewhat greater diameter than the nozzles 24. The lower ends of the nozzles 52 are disposed in concentric relation to openings 53 in the bottom wall of the section 47.

. In the above arrangement, when the steam is turned on, in its passage through the nozzles 24: and into the nozzles 52, it draws the fat from the, chamber 18' and atomizes the fat as it enters the nipples 52'. The steam in passing through these latter, nipples and the openings 53 tends to produce a vacuum in the chamber 48 and thus draw the milk film on the bottom wall of the section 47 into the openings 53 so that the albumen in the milk is-coagulated around the fat globules owing to the atomization of the milk and the increase in temperature thereof. From this point, the operation is substantially the same as in the previously deexert its action in disruptin of the above described forms of with the lowermost section thereof and per 'mit the steam and fat globules to enter directly into the body of. surrounding milk. However, the use of thi base section'ha'ving the ejector chamber is desirable since by the impact of the fatglobules against the wall ofsaid chamber a further breaking up of the fat globules will result before the I final subdivisions thereof in the liquid'contained in the fore-warmer.

In p n of each form of th .paratus, it is esential that the fat intake and the milk intake shall be so proportioned '5 that the-required fat is introduced before the temperature of the mass of milk advances' beyond 160 degrees Fahra which is the coagulatin point of albumen.

The use of t e parallel injectors is" an important feature of the invention, as they greatly increase the area of contact betwee'n large the steam and the liquids. Thus number of small jets each deliverin a certainamount of steam affords greater area of steam impingement upon the liquids than the same amount of steam passing. through a single jet and so permits a greater 'relative proportion of theiforce. of the steam to the "fat and milk into fine "globules or'particles. This extensive subdivision of the liquids is obtained in each form of the apparatus which I have herein described. In the form shown in Fig. 11, the separate steam jet nozzles are entirely dispensed with but their function and purpose as above referredto issubserved by the provisionof the jet orifices 35 jin the wall of the section 30 of the emulsier. I

From the foregoing description considered in connection with the a'ccompan ing drawings, it will be appreciated by t ose conversant with the art, that my improved apparatus is quite distinct from similar apparatuses, as heretofore proposed, in that there is-obtained a subdivision of the fat at three different points .and" in three different stages or conditions of the fatty liquid. This repeated subdivision of the fat insures great uniformity and minuteness and in practice has been found to prevent any fat globules frompassing into the body of emulsifying liquid without being reduced to the size represented or determined by the power contained in the steam. 'Ihus steam at fifty pounds pressure will subdivide the fat to a maximum globule diameter of approximately 0.02 mm. 1

'Ihe several alternative forms of the apparatus to which I have above referred and whereby I have successfully performed the several steps of the proces are to be und rstood as merely suggestive. The apparatus may obviously be exemplified in many other constructions, and it is accordingly understood that I reserve the privilege of adopting all uch legitimate modifications as may be fairly embodied within the spirit and scope of the invention as claimed.

I claim:

1. In an emulsifier, a fore-warmer to contain a body of emulsifying liquid, and means forinjecting fat globules under steam pressure into said emulsifying liquid, whereby the latter is heated bythe steam and certain constituents thereof coagulated, said meansincluding a fat receiving chamber and means for dischargin live steam'upon the fat to eject the fat rom said chamber in the form of globules, the condensing steam exerting a disrupting force upon the fat globules to form fat nuclei upon which the v coagulations are deposited.

2. In an emulsifier, a steam pressure receiving chamber having a lurality of jet orifices communicating t erewith and through which the steam is adapted to impinge upon a liquid and break up the liquid into minute lobules, expansion chambers to receive the lIldiVidllflljBtS, and an ejector chamber into which the jets and liquid globules are directed through the expansion i chambers,'said ejector chamber having outlet orifices through which the liquid globules are distributed under steam pressure into a surrounding body of emulsifying liquid.

3. In an emulsifier, a plurality of steam injectors in parallel, the vacuum chambers of which are connected to a fat reservoir, and the outlet jets of which are directed into corresponding secondary injectors, said secondary injectors having their vacuum chambers connected with a body of emulsifying liquid, and the outlets of said secondary injectors directed into the body of said emulsifying liquid.

- 4. An emulsifier adapted to be submerged in a body of emulsifying liquid, said emulsifier having a steam receiving chamber, a plurality of expansion chambers and jet orifices communicating with the steam receiving chambers and delivering into the respective expansion chambers, and a liquid fat receiving chamber enclosing the expansion chambers for interposing a film of liquid fat between the expansion chambers and the jet orifices.

5. An emulsifier adapted to be submerged in a body of emulsifying liquid, said emulsifier comprising end sections and an intermediate section, one of the end sections having-an injection chamber, said intermediate section being provided with a plurality of expansion chambers opening at one of their ends into the ejection chamber and also having a plurality of jet orifices opposed to the opposite ends of the respective ex ansion chambers and. communicating wit said steam receiving chamber, and said intermediate chamber adapted to receive the liquid fat for interposing a, film of liquid fat between the latter ends of'the expansion chambers and the jet orifices.

In testimony that I claim the foregoing I as my invention, and I have signed my name hereunder. c I

- GEORGE GRINDROD. 

